Comber board for looms



G. BERG com-1R BOARD FOR ooms Filed July 17, 1946.

a Q T N. E v. N

2 Sheets-Sheet 1 GUSTAV BER;

Patented Oct. 10, 1950 Application July 17, 1946. serial i io. 684,339 In Great Britain February 15, 1945 Claims. (01. 139- 86) This invention relates to comber boards; that is? to say, loom components used hitherto as boards formed or provided with a multiplicity of small guides through which work the cords of a harness that controls the shedding of the warps in the weaving of a patterned fabric.

An object of the invention is to provide a builtup comber board comprising a series of juxtaposed cross pieces, each of which co-operates with another to provide a row of cord guides. l

Another object is to provide a .rigid'frame for supporting the cross pieces and-holding themin proper co-relationship.

Another object is to provide in. a" built-up comber board a series of cross pieces which function as distance pieces, or spacers, or fillers, and which are hereinafter specifically referred to as distance pieces, and these distance'pieces are arranged to co-operate with grooved members to form the required rows of cord guides, the thickhess of such distance pieces to determine the spacing, or pitching, of the guide rows.

Another object is to have'distance pieces of different thicknesses available so that by selecting distance pieces of appropriate thickness one ca adjust the spacing of the guiderows.

Other objects of the invention will be apparen from the following specification and the appended claims.

Examples embodying the invention will now be being omitted at places for clearnessn Fig. 2 is a side elevation corresponding to Fig. 1,. and Fig. 3 is a section on the line 3-3 thereof. Fig. A is an end elevation corresponding to Fig. l 'andFig. 5 is a section on the line 55. Fig. 6 is an elevation of a cross-piece shaped with grooves which form cord guides, Fig. 6 being drawn to a larger scale than Figs. 1 no.5. Fig. 7 is a section on the line 1-1 of Fig. 6.

Figs. 8, 9 and 10 are views similar to Fig. 7 but each shows a different sectional form which the crosspiece according to Fig. 6 may have.

Fig. 11 is a perspective view of an alternative built-up comber board.

In the example shown by Figs. 1 to 7, the builtup comber board includes a long series of crosspieces consisting of grooved slatlihe members and. distance pieces 2|, there being a distance piece at one side of eacl member 26, as best shown inFigs. ;1 and 3. In the example,- as Fig. 7

shows, each member 20 has a rounded upwardly inclined side face and this face is cut with equispaced grooves or half-holes 22. Each distance piece is a thin fiat-faced member. The grooves in each member 26 cooperate with the adjacent distance piece 2| to form a row of semi-circular guide holes 23 (shown only in Fig. l) for a number of harness cords (not shown). .Each of the members 26 ends in two rectangular-section heads 24, the depth of which is the same 'as that a of the ends of the distance pieces 2|. The cross pieces 26 and 2| are arranged in a rigid frame includingcomposite longitudinals each consisting of a base component 25 and an angle component 26 or 26A. vThe components 26 and 26A are attached by screws 263 to the associated component 25. The component 26A at 2| snugly. fit, being slidable along the channel and into or out of it. 'The frame also includes end'transvcrsals each consisting of a box-section bridge 21 secured across the ends of the longitudinal components 25, a fixed abutment block 28 secured upon the bridge 21 and a top 'cover'plate 29 which provides a recess beyond the ends of the longitudinal components 26, 26A. A pressure pad, consisting of a slidable crossbar 30 and a blade spring 3|, is applied to each end of the series of cross pieces 26 and 2|, said pad bearing upon the outermost pieces of the series and pressing all the pieces rigidly against one another. Each spring 3| bears against an adjustable abutment 32 which is fitted with the spring in the aforesaid recess provided by the cover plate 29 of the associated end transversal. Adjustment of the abutment 32 is effected by means of a transverse wedge 33 which is interposed between the fixed and adjustable abutments 28 and 32 and is locked in position by a set screw 34 extending through a slot 34A in the cover plate 29 and screwed into the wedge. The frame structure is rendered more secure by transverse stays 36 adjustably secured at their ends by bolts 36A .to the longitudinal components 25, one only of such stays being shown in the drawings In Figs. 1 to 3 of thedrawings, the built-up comber board is shown only at one side o f-its middle line A, and only a few of the cross pieces position.

The parts of the comber board can be assembled in position on an existing harness of cords or can be dismantled wholly or in part without Y need for threading or re-threading the cords.

Should it be desired to insert new'cords, or to adjust the spacing between the rows of guide holes 23, in each instance the desired result can be attained by slackening the wedges 33 and removing any of the sections of thecomponent zfifi' from the frame, so that'a ny. one or more of the. cross pieces'20 end-2 can be removed or replaced, and thereaftercarrying out, the desired chan e or a es, e V D uring assembly or change involving detachmeet of thejcomponent 26A for-insertion or removal of the cross pieces 28 and 2|, the components Zfijfll'ldjtl'ie component 26 serve to hold thecross pieces appropriately in positioIii Th'e 'lorigitudi'nals 'may be composed of a num berof lengths 'connectiblej together end-to e nd ivi houtfi 'e;rrupting'-the continuity of the chaniiels conta'ir iing th'ends of the-pieces 20 and 2|. tliatevent'theflehgth of the-'combr-'-board whil 'j al's'sembled' on a harness "can be changed by dismantling the board parts, removing one or --mre*lengths from each-longitudinal and thereafter re assembling the retained parts, all without'need for unthreading -or re-threading the cords 'through'. the guide hoiesf23; 1 Y =The .end transversals eachhave a slot 35 by virtue oi which the comber board can be adjust- -ably secured to its supporting means'in a loom. Althoughv as shown each grooved member 28 cooperates. with a distance'piece,2| -to: form a row of guide holes 23,.one may use-groovedmem- 'bers only; and inthat event the'arrangement may be such that the grooved face of one mem+ ber cooperates with the ungrooved backof the otherto form a row of semi-circular holes, or such that the grooved faces Of both members cooperate to form a row of circular holes. 4

Thus it will be manifest that the invention provides a built-up comber board 'comprisinga longitudinal series of juxtaposed cross pieoes-2ii formed with, transverse rows of what. arein effect part holes 22 and each co-operating with another cross piece 20 or 2| to providebyvirtue of said part .holes a transverse row of'cord guides 23, and a frame holding the ends of the cross pieces and. maintaining the cross-pieces in proper co- .relationship. I-t will be .noted that this corelationship is maintained by pressure applied lengthwise of the comber board against the abutmcnts 32 at opposite ends through the spring means 3|, so that the cross pieces 20 and 2| are held tightly side by side under such pressure. The. longitudinals 25, 25Aand the transversals constitute arigid frame in which the cross pieces 2|l and 2| are freely slidable and into or out of which the cross pieces are freely insertable or removable.

:The' grooved members may have any of various sections-rasFijgs' l.8.9 and 10 show. As shownby games cross-sectional form may be thicker 4 than that of the members 20 shown in Figs. 1 to 7. As shown by Figs. 9 and 10, the crosssectional form may be round, being circular in Fig. 9 and oval in Fig. 10, members of such crosssectional form being double-sided, so that each forms two rows of guide holes in co-operation with either two adjacent grooved members of similar cross-section or two adjacent distance pieces such as the pieces 2|.

In each' instance (as 'will be understood best formed in a curved side of each member 20, themselves curve upwardly away from the adjacent cross-piece (be it a distance piece 2| or another- 'gro'oved member 20).

Thus each guide 22 provided-for a jacquard cord is upwardly widened or divergent.- With grooved members according to Figs. '7 and 8, the upward widening extends throughout the whole depth of the members. With grooved members, according to Figs. 9 and 10 the upward widening extends throughout hali' the depth ofthe members'. That is to'say, in every-case the upward widening of-the thread guide' 22-extends for 'at' le'ast halfthedepth of the' grooved member. By virtue of this substan tial wideningythe'guide 22allows adequate free'-' dom-forz-a' substantial inclination fromavertical of the jacquard -.cord: '.As is wellknownyuthe harness ".cords of aaija'cquard oralike pattern? selectingu'apparatus '1 riseitvertically from the comber boardjat themiddle of the length thereof, whereas theicords'nearersthe end: of the board rise at an inwards inclination rthe:inclination from vertical bein'ggreatest at thew-ends of the comber board. It will-be appreciated .that. the upwardly widening cord-guiding holes 23 defined by the curved grooves 22;fully allow-- for eventhe greatestzpracticable inclination of the harness cords, without fear. of the cords rubbin against and becoming worn at the tops of the cord guides.

With reference to Fig. 1 1, the built-up comber board therein shown has crosspieces 20 and 2| substantially similar to those shown in Figs. 1 to. 7, although for. clearness thepieces;2|l are omitted from the right-hand end portion of the board and most of the pieces 2| are omitted from the left-hand end {portion The board. shown comprises a frame including lon'gitudinals ill both of them of channel section and oneof. them having a hinged. flap .38 .as the top element ofits channel. The end transversals of the .frameeach comprise a bridge 39 which is rigidlyse'cur-edto thelongitudinals. Each bridge has aslot iaoj-gby virtue} of which the comber board can .be, adjustably secured to supporting means; As'in the previous example the 'crosspieces 2G and 2| are pressed rigidly together'byfpressure pads applied to opposite ends of theseries, each pressure pad consisting of a slidable cross bar 30 and a blade spring 3'! and each spring bearing against an adjustable abutment 32. In the present example; the parts 30. 3| and 32 fit slidablyat their ends in the channels of the longitudinals, .and each abutment 32 is held in place by adjustment screws 4| which are screwed through blocks 42 fitted to the longitudinals at the ends of the channels. The blocks may be rigidly fixed to the longitudinals or may be adjustable, as shown, by'providinga screw-and-slot attachment 43, 44 between each block 42 and the associated longitudinal.

In use of a comber board such as shown in Fig. 11, in order to make'adjustments in regard to the numb'er'or spacing of the grooved members 20,- with or without the-distance pieces -2'|," i t is necessary simply to 'rel'iev th pressure on-the pieces.

series of cross pieces by unscrewing the screws ll at one or each end of the board and temporarily lifting the hinged flap 38, thus permitting removal, insertion or interchange of cross'pieces.

In the foregoing specification and in the following claims the expression cross piece has been used as a generic term the meaning of which includes both a grooved member (such as the members shown in Figs. 6 to 10) and a distance piece (such as any of the distance pieces 2|) I claim:

1. A built-up comber board comprising a series of juxtaposed cross pieces having sides formed with grooves and co-operating with one another,

to make of said grooves a row of cord guides, a frame in which said cross pieces are slidably supported at their ends, a pressure pad incorporated in at least one end of said frame, spring means co-operating with said pressure pad to hold said cross pieces in proper co-relationship, and'means for adjusting th through said pad and spring means to said cross 2. A built-up'coinber board comprising'a series of juxtaposed cross pieces having sides formed holding pressure applied frame in which said cross pieces are slidablysup I ported at their ends, pressure pads incorporated in opposite ends of said frame, spring means interposed between at least one of said pressure pads and said series of cross pieces in order to 6 down one side and other cross pieces interposed as spacers between adjacent grooved cross pieces, said spacers co-operating with said grooves to form rows of cord guides.

4. A built-up comber board comprising a series of juxtaposed cross pieces, each of which cross pieces oo-operates with another cross piece to provide a row of cord guides, a frame supporting the cross pieces, a pressure pad incorporated in at least one end of said frame, spring means cooperating with said pressure pad to hold said cross pieces in proper co-relationship, and means for adjusting the holding pressure applied through said pad and spring means to said cross pieces.

5. A built-up comber board comprising a series of juxtaposed cross pieces, each of which cross pieces co-operates with another cross piece to a provide a row of cord guides, a frame supporting the cross pieces, pressure pads incorporated in opposite ends of said frame, spring means interposed between at least one of said pressure pads and. said series of cross pieces in order to hold said cross pieces in roper co-relationship, and means applied to at least one of said pressure pads for adjusting it lengthwise of the frame in order to adjust the holding pressure exerted through said spring means on said cross pieces.

' GUSTAV BERG.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

